β decay of neutron-rich 53-56Ca
Creators
- 1. Department of Chemistry, Michigan State University, East Lansing, Michigan 48824 (United States)
- 2. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (United States)
- 3. Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342, Cracow (Poland)
- 4. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- 5. Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742 (United States)
- 6. Department of Physics and Astronomy, Florida State University, Tallahassee, Florida 32306 (United States)
- 7. Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859 (United States)
- 8. Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824 (United States)
- 9. RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198 (Japan)
- 10. Department of Physics, University of Notre Dame, South Bend, Indiana 46556 (United States)
Description
β-decay properties of neutron-rich Ca isotopes have been obtained. Half-life values were determined for the first time for 54Ca (86±7 ms), 55Ca (22±2 ms), and 56Ca (11±2 ms). The half-life of 230±60 ms deduced for 53Ca is significantly longer than reported previously, where the decay chain 53K → 53Ca → 53Sc was considered. A delayed γ ray with an energy of 247 keV was identified following β decay of 54Ca and is proposed to depopulate the 11+ level in 54Sc. The β-decay properties compare favorably with the results of shell-model calculations completed in the full pf space with the GXPF1 interaction. The half-lives of the neutron-rich Ca isotopes are also compared with gross β-decay theory. The systematic trend of the neutron-rich Ca half-lives is consistent with the presence of a subshell gap at N=32
Additional details
Identifiers
- DOI
- 10.1103/PhysRevC.77.014313;
- arXiv
- arXiv:0801.0994v1;
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 77
- Journal Issue
- 1
- Journal Page Range
- p. 014313-014313.10
- ISSN
- 0556-2813
- CODEN
- PRVCAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39082122
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- BETA DECAY; CALCIUM 53; CALCIUM 54; CALCIUM 55; CALCIUM 56; COMPARATIVE EVALUATIONS; ENERGY LEVELS; GAMMA RADIATION; HALF-LIFE; KEV RANGE; NEUTRONS; NUCLEAR STRUCTURE; NUCLEON-NUCLEON INTERACTIONS; POTASSIUM 53; SCANDIUM 53; SCANDIUM 54; SHELL MODELS
- Descriptors DEC
- ALKALINE EARTH ISOTOPES; BARYON-BARYON INTERACTIONS; BARYONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CALCIUM ISOTOPES; DECAY; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ENERGY RANGE; EVALUATION; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; FERMIONS; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; INTERMEDIATE MASS NUCLEI; IONIZING RADIATIONS; ISOTOPES; MATHEMATICAL MODELS; MILLISECONDS LIVING RADIOISOTOPES; NUCLEAR DECAY; NUCLEAR MODELS; NUCLEI; NUCLEONS; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; PARTICLE INTERACTIONS; POTASSIUM ISOTOPES; RADIATIONS; RADIOISOTOPES; SCANDIUM ISOTOPES
Optional Information
- Notes
- (c) 2008 The American Physical Society